BMW M5 vs. Panamera GTS by MotorTrend

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The 2013 models go head-to-head in California in this quite super sedan showdown.

For MotorTrend's latest "Head 2 Head" episode, Jonny Lieberman pits two of Germany's finest sports sedans - the BMW M5 and the Porsche Panamera GTS - against each other. Although the horsepower figures might match the 553hp M5 against the top-of-the-line, 543hp Panamera Turbo S, that model carries a significantly higher price tag. So Porsche in this comparison had to be represented by its newer (but less powerful) addition, the 430hp Panamera GTS.